Can you cross side tune if you lose an RTU?

The correct answer highlights that you can cross side tune if you switch the RTU INHIB switch. In aviation systems that utilize Radio Tuning Units (RTUs), the INHIB mode allows for specific tuning capabilities despite losing an RTU. This is an essential feature as it provides flexibility and allows the crew to maintain communication and navigation capabilities even during equipment failures.

Cross side tuning refers to the ability to adjust frequencies on a different side of the communication or navigation system than the active side or primary control. By using the INHIB switch, the system can temporarily allow for adjustments that would normally be restricted to ensure safety and operational integrity in case of a failure.

The assertion that cross side tuning is restricted by design indicates a misunderstanding of the operational capabilities provided by the INHIB switch and how it supports pilots in managing abnormal situations effectively. Other options suggest limitations that do not take into account the flexibility allowed by the system design when certain switches are activated.